Improvement in type-casting machines



UNITED STATES PATENT OFFICE.

J OIIN I. STURGIS, F NEIV YORK, N. Y., ASSIGNOR TO H. II. GREEN.

JMPROVEMENT IN TYPE-CASTING MACHINES.

Specication forming part of Letters Patent- No. 8,349, dated September 9, 1S51.

T0 a/ZZ whom it may concern:

Be it known that I, JOHN I. STURGIS, of the city, county, and State of New York, haveinvented anew and useful Improvement in Machines for Casting or Molding Printers Type and I do hereby declare the following to be a full description lot' the same.

The nature ot myinventiou consists in the arranging of a slide-rest for the support of the 1noldblocks in a frame, so as to have an oblique side inclination for facilitating` the dropping of the type from the mold-bloek when opened and a forward horizontal slide motion for presenting; the mold-block to the nipple of the fused-metal bath; also,the combining therewith the mold-blocks and the arrangement of certain levers for the opening and closing the said mold-blocks and operating or relieving the matrix, all for the purpose of producing a more perfect and expeditious inode of casting printers type; but to describe my invention more particularly I will refer to the accompanying drawings, the same letters in the several drawings referring to the same parts wherever they occur.

Figure l isa left-hand side elevation of the machine, and Fig. 2 a right-hand side elevation of the same. Fig. 3 is a horizontal view, (except the slide-reacting sp1-in g5) Fig. et, a cut section view through the line of the arrows in Fig. 3; Fig. 5, the adjustingholder of the front end of the mold-blockopeningl lever; Fig. 6, a detached view of the slide-rest and cam on the main shaft for operating it with the mold-block levers; and Fig. 7, a detached sectional view of a part of slide-rest frame -and slide-rest and back of the mold-block with the lower lever for relieving the matrix attached thereto.

Letter A is the platform, B the main shaft, and B2 and B3 bearings on which it rests.

C is the cam on the main shaft for operating the horizontal slide D by means of a projection or roller E, bolted or secured to the under side of it. The shape of this horizontal slide-rest is made bowing, so as to accommodate the rotation of the driving-cam C under its center of action, and fork shaped at the mold-block end, that the levers for opening the mold-block an d relieving the matrix may work up between the branches of the forked end without interfering with its forward or backward motion in being charged with the fused metal and discharging it when molded into the type.

F is the stem on the front end of the horizontal slide. v

G is the stand or supportfor the stem F.

H H2 represent the frame or ways on which the forked end of the horizontal slide runs. These ways are arranged obliquely downward to each other at an angle of about forty-iive degrees, so as to allow the horizontal slide to present the 1nold-block to the nipple of the fused-metal bath in an oblique, sidewise, and downward position, that when the mold-block is being drawn back from the nipple and the upper half of it opened the type by their own gravitation will free themselves from it.

I is the mold-blocks, composed of an upper and lower half, and attached by means of screws to the forked end of the horizontal rest I2. The upper half of the mold-block works on a center I3, secured to the back ot' the lower half ot' the mold-block by the screw I4, working in an adjusting-slot so as to allowV of elevating or depressing it to suit the various-sized type cast.

J is the mold-block-opening lever, having its upper end passing up between the branched ends of the slide and bent at right angles, so as to tit or work in a loop or bracket secured on the top of the upper half of the mold-block for opening and shutting it, and attached by its lower end to a lever K for depressing and elevating or opening the mold-block. This lever K is arranged nearly parallel with the slide, and is secured at its front end by an adjustable support-piece L. Secured by adjusting-screws l and Z2 to the front end and upper edge of the horizontal slide, at about the middle (lengthwise) of the lever K, is attached by a screw the upper end of a depressing-lever M, and by its lower end to the base of main shaft-support B3, for the purpose ot' operating the lever J, having its lower end attached to the back end of K for opening and shutting the mold-block as the hori zontal slide is moved forward or backward.

N is the matrix-spring, secured to the upper side of the horizontal slide by means of a screw near the front end of the slide, and at its opposite end extending back so as to present its point in contact with the upper end of the matrix.

O is the matrix-spring holding or steadying lever, secured by a pin to the inner edge of the lower branch of the slide, and near the middle of it. This lever is some two to three inches in length, and hasin and near its upper end a small projecting pin p, around which the end of the spring makes a turn or is fastened, and thereby keeps it always steady and firmly against the upper end of the matrix when the slide is pressed in.

P is the matrix-spring operating or pushing lever, having a center pin 7' in the upper end of the slide-rest frame H2. This lever is about four inches long, and bent at its lower end at right angles, so as to press againstthe edge of matrix-spring holder O.

Down the middle of the long arm of P is a slot s. `Through this slot a pin t is inserted. This pin t is secured to an adjustable slidepiece R, secured on the face of the upper branch of the horizontal slide, andis so made by means of slots and screws passing through as to admit of regulating the extent of motion of the lever P when the horizontal slide is pushed up to receive the charge of metal.

S is the matrix-lever,in the shape of a bent right-angle lever, and supported by a pin or screw through the angle or near it, and a shoulder or supporting-piece T, attached to the back and lower side of the mold-block I as the fulcrum on which the lever works. On the lower or horizontal leg of the lever and near the end is a roller U, which, as the horizontal slide and incid-blocks are carried backward or forward, rolls up and down the inclined plane V, and causes thereby the upper leg of the lever to work the lower end of the matrix and throw the upper end back as the mold-blocks are being drawn back from the nipple, so as to free the face of the type and allow it to fall as the upper halt of the mold-block is opened.

W is the reacting-spring, attached at one end to the supporting-frame H2 and at the other to the horizontal slide for the purpose of reacting it or drawing back from the nipple the mold-blocks.

X is the plunger-cam secured on the main shaft.

Y is a plunger-lever support.

Z is the plunger-lever.

a is the reacting-spring for depressing the plunger or piston in the fused-metal well.

b is the connecting-rod from the plunger-lever Z to the upper plunger-lever c, supported by a pin to the piston-frame d.

e is the piston for expelling the fused metal from the well f through the nipple g to the mold-block.

Letter h is the hotmetal bath.

t' and j are the feed and smoke boxes from the furnace underneath the hot-metal bath.

7e represents adjusting-screws for the hotmetal bath.

n is the crank.

The operation of these various parts is that when the main shaft is turned the cam C, acting on t-he roller E on the lower side of the horizontal slide, causes it to move toward the bath. In doing` this it draws against the lever M, which, having its lower end made fast to the footof the main-shaft support, causes it to draw down the end of the levers K and J, attached thereto, to close the mold-block. At the same time the mold-block is being shut the roller U descends the inclined plane V and throws the lower end of the matrix m back, while the matrix-spring-pushing lever P, pressing against the matrix-spring holding or steadying lever O, causes the point of the matrix-spring to press against the back and upper end of the matrix m to hold it firmly to the mold while the metal is being ejected into it by the reaction of the piston e, after having passed the elevating point on the cam X. Then the mold has been charged, the cam C has passed its greatest diameter,

and immediately the spring W draws back.

from the bath the mold-block, and in doing so reverses the posit-ion of the several parts to that supposed to bc the position of the parts herein described.

Having now described my invention and the operation of the same, I will proceed to set forth what I claim and desire to secure by Letters Patentl. The employment of the lever P, having an adjusting-slot, adjuster R, matrix-spring holder O, and their combination with the horizontal slide D, slideways H H2, and matrixspring N, substantially in form and manner and for the purposes herein set forth.

2. The employment of the adjusting supporting-piece L and the combination therewith of the horizontal slide and levers K, J, and M, substantially in form and manner and for the purposes herein described.

3. The combination and arrangement of the horizontal slide, slideways, and levers operated thereby, for the purpose of obtaining a horizontal and oblique action of the machine.

JOHN I. STURGIS.

Witnesses;

T. A. C. FREND, CHARLES L. BARRITT. 

